1. X ( has to -> must )
= It’s raining outside. Tim must take his umbrella.
2. X ( musn't -> do not have to )
= I can give you a hand. So you do not have to do it alone.
3. X ( musn't -> do not have to )
= They do not have to be hurry because the film starts late.
4. V
5. X ( musn't -> )
= Tomorrow is Monday but I do not have to go to work.
6. V
7. V
8. V
9. X ( musn't -> do not have to )
= It is warm today so we do not have to wear thick coat.
10. V
# vananh